The norflls peters



No. 607,399. Ptented July I2, |898.

L. E. WATERMAN.

`FOUNTA`IN PEN.

(Application filed Aug, 24, 1897.)

(No Model.)

witwassen gnou/Lto@ Nifrnn STATES LEWIS E. VATERMAN, OF NEV YORK, N. Y.

FouNTAlNpEN.

SPECIFICATION forming part of Letters Patent No. 607,399, dated July 12,1898.

Application led August Z4, 1897. Serial No. 649,363. (No model.)

To all whom t may concern Be it known that I, LEWIS E. VATERMAN, acitizen of the United States, residing in the city of New York,(Brooklym) county of Kings, and State of New York, have made a new anduseful invention in Fountain-Pens, of which the following is aspecification.

My invention relates to improvements in fountain-pens or pens in whichthe ink is carried in a reservoir and fed to the writing-penautomatically by its own use; and the objects of my improvements are,first, to provide an annular or approximately annular capillary channelor passage-way into which the ink first passes from the reservoir on theway to the writing-pen; second, to connect this capillary channel orpassage-way with the airduct and with longitudinal capillary channels orpassage-Ways in the top of the feedbar at each side of the air-duct,and, third, to combine these capillary channels or passage-ways with thereservoir and subreservoir located under the writing-pen and providedwith an air valve or inlet. I attain these objects by the mechanismillustrated in the accompanying drawings, in which- Figure 1 is a partsectional View of the nozzle and top part of the feed-bar. Fig. 2 is asimilar view with a 'slight moditicationof detail. Fig. 3 is a partsectional view of the entire fountain-pen. Fig. 4 is a horizontalsectional view of the nozzle and includes a top View of the feed-bar.Fig. 5 is a vertical sectional view of the same parts associated withthe lower end of the reservoir. Fig. 6 is an end view of the feed-barand a sectional view of the nozzle cut on the line 6 6, Fig. 5. Fig. 7is a sectional view cnt on the line 7 7, Fig. 5; and Fig. 8 is a similarview with a slight diiference in detail.

Similar letters relate to similar parts throughout the several views.

The reservoir R is provided with a nozzle N, and the nozzle N with thefeed-bar F, having the secondary reservoir R', a writing-pen P with anair-inlet O, and is beveled at, near, and around its rear end. Thefeed-bar is also provided with the air duct or channel A, which is anextension of the secondary reservoir R', and allows the air to pass intothe reservoir at the top of the feed-bar when the inlet O is not closedby ink and the air-duct itself is open throughout or free from ink. Atthe side of the air duct or channel A the feed-bar may be cut away flatacross with surfaces on each side at right angles with'the sides of theair-duct and parallel with the bottom of the air-duct or at an acuteangle with the sides of the air-duct, as shown in Figs. 2 and 8; onlythe feed-bar should be so cut away in those parts as to furnish, by therelations of the nozzle thereto, capillary channels or passage-ways,preferably at both sides of the air-duct.

At the end of the feed-bar an approximately annular capillary channel orpassagewayB is formed by tapering the inner end of the feed-bar, asshown, and the function of this part of the device is to receive andtransfer the ink bycapillarity from the reservoir down to the last dropcontained therein to the capillary surfaces, channels, or passageways CC on the way to the pen and to assist these capillary passage-ways andcoperating with the air-duct to admit air and to emit ink in exchange,through the action of the pen and the air inlet or valve O, as the lattenlet is automatically filled with ink or op/e ed so as to admit air.

/Instead of beveling the inner end of the feed-bar the inner surface ofthe nozzle may be beveled at and opposite the same point, so as to forma similar channel for similar purposes.

When and where it becomes desirable to increase the iiow of ink to thewriting-pen, the capillary capacity of the capillary channels at theside of the air-duct may be increased by beveling them laterally, asshown in Figs. 2 and 8.

I claim as my invention- 1. A feed-bar of a fountain-pen beveledexternally at and in front of the inner end so as to form a capillarychannel or passage-way for ink from the reservoir, substantially in themanner and for the purpose set forth, in combination with capillarychannels or passage-ways, one or more, on the upper and outer side ofthe feed-bar for conducting the ink from the reservoir to the pen.

2. A feed-bar of a fountain-pen beveled externally at and in front ofthe inner end so as IOO to form a capillary channel or passage-Way forink from the reservoir, substantially in the manner and for the purposeset fort-l1, in combination with an air-duct channel consisting of agroove formed in the top of the plug portion of the feed-bar and Withcapillary channels or passage-Ways on one or both sides of the air-ductformed between the plug and the nozzle and extending and conducting inkto the pen.

3. A feed-bar of a fountain-pen beveled externally at and in front ofthe inner end so as to form a capillary channel or passage-Way for inkfrom the reservoir, substantially in the manner and for the purpose setforth, in combination with an air-duct channel consisting of a grooveformed in the top of the plug portion of the feed-bar, with capillarychannels or passage-Ways on one or both sides of the air-duct formedbetween the plug and the nozzle and extending and conducting ink to thepen, and a secondary reservoir located under the pen.

4. A feed-bar of afountain-pen beveled externally at and in front of theinner end so as to form a capillary channel or passage-Way for ink fromthe reservoir, substantially in the manner and for the purpose setforth, in combination With an air-duct channel consisting of a grooveformed in the top of the plug portion of the feed-bar, with capillarychannels or passage-Ways on one or both sides of the air-duct formedbetween the plug and the nozzle and extending and conducting ink to thepen, and a secondary reservoir located under the pen provided with anair-inlet located in or under the pen.

LEVIS E. WATERMAN.

Witnesses:

EDWARD S. BERRALL, JAMES A. SKILTON.

